Central heating installation



Patentedj aug. 355, i927.

marten-stares DERK VAN DER WOUDE, 0F GRONINGEN, NETHERLANDS.

CENTRAL HEATING INSTALLATION.

Application filed August 12, 1a24jseria1 No. 731,688 and in the Netherlands June a, 1924.

According to a well known system of heating, the water issuing "from the radiators is led into an open space and forced up thence by a pump into the heating boiler. The water delivered under pressure to the radiators is admitted to these latter by being allowed to pass through a narrow opening which is adjustable and adapted to be closed. Theradiators themselves are under atmospheric pressure. Y

It has been observed that for the heating of large groups of dwellings, for which systems of the type are principally designed,

these s stems have not ielded the results expected, owing to the factthat the delivery pressure Varies according to the number of radiators in use, to such an extentthat it is necessary to keep a constant watch on the apparatus in order to correct the regulation of the cross sectional area of the passage for the water. As the lowest pressure which is capable of existing should be suiiicient to produce a suitable supply of water, the.

highest was sometimes such that the cross sectional area of the passage became too strongly throttled, which together with the presence of obstructions rendered accurate regulation diiiicult and often caused a disagreeable noise.

in addition to these defects this variation on": the delivery pressure also possessed the.

disac vantage that the heat consumed could not be measured by the quantity of water passing into the radiators. 1

The o o'ect of the present invention is to remedy these disadvantages. By the provision oii one or more intermediate chambers on the pressure side of .the pump, in which chambers a substantially constant pressure is maintained, it is possible to pro-" vide a substantially constant "delivery pressure to the radiators. For the central heating of a large number of dwellings, it is ad visable to employ several intermediate chambers into which the supply pipe opensand which supply the radiators. These chambers are preferably constructed in the form of float reservoirs which communicate with the external air and in which the level of the liquid is maintained automaticallyfat a constant height. In the case of the heating.

of a comparatively small number of dwellings or large buildings, a single intermediate chamber may be used, which is placed in an elevated position and may then be, open;

This single intermediate chamber maybe provided with means for heating thewater thereirn-in which case a-separate boiler may be dispensed with.

The drawings show examplesof two constructional forms of the invention above de scribed.

The figure in matically an installation comprising several intermediate chambers.

In the drawing, 1 is the heating boiler from which the hot water is conveyed through a pipe 2 to the points of consumption. .From this pipe 2 lead pipes 3 which supply the hot water to the radiators 4, the water being discharged from said radiators through pipes 5 and a return pipe 6 into an open reservoir 7 whence the water is withdrawn by a pump 8 for the purpose of feeding the boiler.

The vertical pipes '3 open into open chainbers 9 in which the level of the water is regulated by floats 10 independently of the pressure existing in the pipes 3. From the float chambers 9 the hot water is led through pipes 11 to the radiators 4;. The supply of water to each radiator is regulated by a throttling device 12, placed in the outlet pipe of the radiator. This position of the throttling device has the advantage that any 1'; dirt or impurities which may be carried along by the hot waterare enabled to settle down at the lower part of the radiators and do not choke up the throttling device 12. i

The radiators are also connected at their lowest points to the outlet pipes 5 by cocks 13which are normally closed. These cooks 13 are opened only when'the radiators corresponding thereto are to be put out of op,-

eration for the time being. The cocks-14; in

advance of the radiators are then closed, the water exhaust from the radiators through the drawingshows diagram- S the cooks 13 and carries with it the dirt and In the installation constructed according I to the present invention the pressures remain practically constant on the delivery and outlet sides. It is thus possible to measure by the aid of water meters the quantities of water passing into the radiators and to reduce therefrom the heat consumed.

Having now particularly described and ascertained the nature of my said invention and in whatmanner the same is to be performed, I declare that what I claim is:

A central water heating installation coinprising'radiators, an open reservoir placed below certain of said radiators, a radiator return pipe opening into said reservoir, a water pump, a pipe leading from the open reservoir to the suction side of said pump, chambers elevated with respect to the radiators which they serve, pipes leading from the pressure side of the pump to said chainbers, pipes leading from each chamber to the corresponding radiators below, means for heating the Water fed by the pump to the radiators, and means to maintain a sub- 20 stant-ially constant level in each chamber.

In testimony whereof I aflixmy slgnature.

DER-K VAN- DER WOUDE. 

